android 使用Activity做窗口弹出（模拟Dialog）

我们下面使用Activity，模拟一个dialog：

首先看布局：

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:layout_width="270dp"
              android:layout_height="wrap_content"
              android:gravity="center_horizontal"
        >

    <!--标题-->
    <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="分享到哪里？"
            android:textSize="18sp"
            android:padding="10dp"
            android:textColor="@color/dialog_title_color"
            android:gravity="center_horizontal"
            />

    <!--分割线-->
    <View
            android:layout_width="match_parent"
            android:layout_height="1dp"
            android:background="@color/bg_action_bar_color"
            />

    <!--分享到哪里-->
    <GridView
            android:id="@+id/dialog_share_grid_view"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:listSelector="@drawable/empty_selector"
            android:numColumns="3"
            android:horizontalSpacing="10dp"
            android:verticalSpacing="15dp"
            android:layout_margin="10dp"
            />
</LinearLayout>

然后是该Activity

package cn.via.dageeeOrderFood.activity;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.TextView;
import cn.via.dageeeOrderFood.R;

/**
 * Created by Heyiyong on 2014-3-5 上午9:12.
 */
public class ShareActivity extends Activity {
    private int[] shareIcons = {
            R.drawable.ic_share_duanxin,
            R.drawable.ic_share_pengyouquan,
            R.drawable.ic_share_qq,
            R.drawable.ic_share_qqkongjian,
            R.drawable.ic_share_weixin,
    };

    private String[] shareTitles = {
            "短信", "朋友圈", "QQ好友", "QQ空间", "微信"
    };

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.dialog_share);

        GridView gridView = (GridView) findViewById(R.id.dialog_share_grid_view);
        gridView.setAdapter(new BaseAdapter() {
            @Override
            public int getCount() {
                return shareIcons.length;
            }

            @Override
            public Object getItem(int i) {
                return null;
            }

            @Override
            public long getItemId(int i) {
                return 0;
            }

            @Override
            public View getView(int i, View view, ViewGroup viewGroup) {
                View itemView = View.inflate(ShareActivity.this, R.layout.item_share_grid_view, null);
                ((ImageView) itemView.findViewById(R.id.item_share_img)).setImageResource(shareIcons[i]);
                ((TextView) itemView.findViewById(R.id.item_share_tv)).setText(shareTitles[i]);
                return itemView;
            }
        });
    }
}

gridView的item布局

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:gravity="center_horizontal"
              android:background="@drawable/share_grid_view_item_selector_xml"
        >

    <ImageView
            android:id="@+id/item_share_img"
            android:layout_width="56dp"
            android:layout_height="56dp"
            android:src="@drawable/ic_share_duanxin"
            android:padding="4dp"
            />

    <TextView
            android:id="@+id/item_share_tv"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="短信"
            android:textSize="13sp"
            android:layout_marginTop="3dp"
            android:textColor="@color/dialog_content_color"
            />
</LinearLayout>

最后在AndroidManifest文件：

  <!--分享的dialogActivity-->
        <activity
                android:name=".activity.ShareActivity"
                android:theme="@style/dialogActivity"
                />

其中theme为：

    <!--用activity模拟dialog-->
    <style name="dialogActivity">
        <item name="android:windowBackground">@android:color/transparent</item>
        <item name="android:windowFrame">@null</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowIsFloating">true</item>
        <item name="android:windowIsTranslucent">true</item>
        <item name="android:windowContentOverlay">@null</item>
        <item name="android:windowBackground">@drawable/dialog_bg_update</item>
        <item name="android:windowAnimationStyle">@android:style/Animation.Dialog</item>
        <item name="android:backgroundDimEnabled">true</item>
    </style>

drawable/dialog_bg_update.xml

<?xml version="1.0" encoding="utf-8"?>

<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="@color/dialog_background_color"/>
    <!--<stroke android:color="#ff5e5e5e" android:width="1dp"/>-->
    <stroke android:color="@color/bg_action_bar_color" android:width="1dp"/>
    <corners android:radius="10dp"/>
</shape>

drawable/share_grid_view_item_selector_xml.xml

<?xml version="1.0" encoding="utf-8"?>

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true">
        <shape xmlns:android="http://schemas.android.com/apk/res/android">
            <solid android:color="@color/item_press_color"/>
            <corners android:radius="5dp"/>
        </shape>
    </item>
    <item>
        <shape xmlns:android="http://schemas.android.com/apk/res/android">
            <solid android:color="@color/dialog_background_color"/>
        </shape>
    </item>
</selector>